ICD-10 Code for Premature

The ICD-10-CM 2027 alphabetic index lists premature with the subterms below. More specific codes depend on the details documented, as listed in the official index (15 codes, 14 billable).

Index entries for Premature

adrenarche – E27.0
aging – E34.8
beats – I49.40
- atrial – I49.1
- auricular – I49.1
- supraventricular – I49.1
birth NEC – see Preterm, newborn
closure, foramen ovale – Q21.8
contraction
- atrial – I49.1
- atrioventricular – I49.2
- auricular – I49.1
- auriculoventricular – I49.49
- heart (extrasystole) – I49.49
- junctional – I49.2
- ventricular – I49.3
delivery – O60.10 (header) – see also Pregnancy, complicated by, preterm labor
ejaculation – F52.4
infant NEC – see Preterm, newborn
- light-for-dates – see Light for dates
labor – see Pregnancy, complicated by, preterm labor
lungs – P28.0
menopause – E28.319
- asymptomatic – E28.319
- symptomatic – E28.310
newborn
- extreme (less than 28 completed weeks) – see Immaturity, extreme
- less than 37 completed weeks – see Preterm, newborn
puberty – E30.1
rupture membranes or amnion – see Pregnancy, complicated by, premature rupture of membranes
senility – E34.8
thelarche – E30.8
ventricular systole – I49.3

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.